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In the meantime, here is some of our best thinking.
What Is Incrementality in Marketing? A Practical Guide
ROAS and attribution tell you what got credit for a sale. Incrementality tells you what actually caused it. Here's what incrementality means, the methods used to measure it, and how to turn it into smarter budget decisions.
The Creative Testing Statistics Reference
Significance, power, MDE, sequential testing: the statistics of creative testing as it actually works in paid media, not as it works in a software A/B test.
The Paid Media Anti-Pattern Glossary
The named bad practices in paid media (retargeting harvesting, branded-search cannibalization, vanity ROAS, lookalike incest), each with how to detect it and what to do instead.